pertinacious
	英 [,pɜːtɪ'neɪʃəs]
美[,pɝtn'eʃəs]
	    
    英英释意
	
	- 1. stubbornly unyielding;
 - "dogged persistence"
 - "dour determination"
 - "the most vocal and pertinacious of all the critics"
 - "a mind not gifted to discover truth but tenacious to hold it"- T.S.Eliot
 - "men tenacious of opinion"